Patent GB-431760-A (GB)
Title: Process and apparatus for obtaining light hydrocarbons from heavy hydrocarbons by solution with gaseous hydrocarbons and separation by cascade distillation
IPC: C10L1/04
Filed: 1933-10-09
Abstract: <PICT:0431760/IV/1> <PICT:0431760/IV/2> Hydrocarbons of low boiling-point are obtained by dissolving gaseous hydrocarbons in heavy oils in a series of stages under different temperatures and pressures.  Gaseous hydrocarbons from a gasometer V are compressed in a container C, the compressed gases being used in part to force heavy oil from a receiver D through a line 8 and jets c to which the gases themselves are led through pipes 3, 4.  The oils are thus atomized by the gases into the vessel G and a solution of the gases in the oils is obtained which is further treated in an autoclave F in presence of hydrogenating catalysts contained in tubes d through which hydrocarbon gases are also sprayed by a pipe 5.  The oils, after recirculation, if desired, to the container E through a pipe 7, are passed through a pipe 6 into an autoclave H where they are further treated with gaseous hydrocarbons from a pipe 11.  The autoclave H is filled with Raschig rings or catalyst tubes and also contains a catalyst box I into which the gases and vapours produced in the autoclave flow through a pipe i protected by a pipe V<1> closed at the top and open at the bottom and provided with a pressure equalizing pipe p<1>.  The heavy oils from the autoclave H are returned to the container E through a pipe 13.  The hydrogenated gases pass from the catalyst chamber I into a jacketed condenser L maintained at lower pressure and at a fixed temperature so that the products of higher boiling-point condense and collect in a receiver M from which they pass to a container U.  The uncondensed vapours pass to a chamber N and thence to a jacketed condenser O also maintained at a predetermined temperature, to condense a fraction which collects in the receiver N and is finally passed to the container U while a final light fraction passes off through a thermostatically controlled chamber P to a condenser R, chamber S and receiver T.  Residual gases are returned through lines 15, 19 to the gasometer V.  If the gases to be treated already contain propane, butane &c. the gases may be sent direct to the autoclave H and the gases issuing from the condenser R are used in the first stage.  The products issuing from the autoclave H may also be fractionated by compression.  The fractions collected in the receiver U may be recirculated to the line 2.  The sprays C may comprise a spray nozzle 20 leading to a container 21 containing catalyst 22, Fig. 2.ALSO:<PICT:0431760/III/1> <PICT:0431760/III/2> Hydrocarbons of low boiling-point are obtained by dissolving gaseous hydrocarbons in heavy oils in a series of stages under different temperatures and pressures.  Gaseous hydrocarbons from a gasometer V are compressed in a container C, the compressed gases being used in part to force heavy oil from a receiver D through a line 8 and jets C to which the gases themselves are led through pipes 3, 4.  The oils are thus atomized by the gases into the vessel G and a solution of the gases in the oils is obtained which is further treated in an autoclave F in presence of hydrogenating catalysts contained in tubes d through which hydrocarbon gases are also sprayed by a pipe 5.  The oils, after recirculation, if desired, to the container E through a pipe 7, are passed through a pipe 6 into an autoclave H where they are further treated with gaseous hydrocarbons from a pipe 11.  The autoclave H is filled with Raschig rings or catalyst tubes and also contains a catalyst box I into which the gases and vapours produced in the autoclave flow through a pipe i protected by a pipe V<1> closed at the top and open at the bottom and provided with a pressure equalizing pipe p<1>.  The heavy oils from the autoclave H are returned to the container E through a pipe 13.  The hydrogenated gases pass from the catalyst chamber I into a jacketed condenser L, maintained at lower pressure and at a fixed temperature so that the products of higher boiling point condense and collect in a receiver M from which they pass to a container U.  The uncondensed vapours pass to a chamber N and thence to a jacketed condenser O also maintained at a predetermined temperature, to condense a fraction which collects in the receiver N and is finally passed to the container U while a final light fraction passes off through a thermostatically controlled chamber P to a condenser R, chamber S and receiver T. Residual gases are returned through lines 15, 19 to the gasometer V.  If the gases to be treated already contain propane, butane, &c., the gases may be sent direct to the autoclave H and the gases issuing from the condenser R are used in the first stage.  The products issuing from the autoclave H may also be fractionated by compression.  The fractions collected in the receiver U may be recirculated to the line 2.  The sprays C may comprise a spray nozzle 20 leading to a container 21 containing catalyst 22, Fig. 2.